For other uses of Opossum, see Opossum (disambiguation). The opossums, also known as possums, are marsupial mammals of the order Didelphimorphia /daÉªËdÉlfáµ»ËmÉËrfiÉ/). The largest order of marsupials in the Western Hemisphere, it comprises 103 or more species in 19 genera.
The index also provides statistical analysis and crime, and the cost of crime, in the 61 most populous metropolitan areas. The Cambridge metro area in Massachusetts ranked as the most peaceful and the Detroit metro area as the least. Murders in the United States by state.
The Most Dangerous States in America. Violent crime has become less common in the United States in recent years. There were slightly more than 1.1 million reported incidents in 2014, or 366 incidences per 100,000 residents, a 9.4% decrease from the 2010 rate of 404 violent crimes for every 100,000 Americans.